Remember, Christianity falls apart if
(a) Christ didn't rise from the dead, and
(b) Didn't ascend into heaven.
Wasn't Alexander the Great born BEFORE Christ?
There were various "versions" of what Christianity meant and the nature of Christ in those early days. The Council of Nicea settled those issues and gave us the Nicene Creed, which is a pretty good definition of what it means to be Catholic/Christian.
The big issue for Holy Mother Church was the embracement of temporal power. Uh uh. While it may seem nice to live like a prince, that ain't what Christ intended. You're supposed to be shepherds, not lords. The occasional hob nob with the common folk don't make you a shepherd, not with your flocks be devastated by the wolves, some of which are in sheep's clothing, or worse, shepherds.
Also, you don't accept the Queen's shilling. I don't care if the State is giving away millions and a share of that is mighty tasty. Once you start sucking on the government teat, you're tied to that government and you will compromise yourself to keep the $$ coming.
Now that I’ve stopped ranting

, I've come to believe that Catholicism is a series of inconvenient truths. If you follow Her teachings, you're not going to be popular. The tree may bend, but it will never submit to the wind. Submitting will cause the tree to uproot and die.
We now return you to your local programming.